{Unused} Actions and URLs

Unused: Use "Action" or "URLs" components instead.

• XWIKI-2613 2008-08-12T16-57 06/Oct/12 Make XWikiServletURLFactory#getServerURL public
• XWIKI-227 2006-03-20T10-39 06/Oct/12 XWiki generates wrong links behind a reverse proxy with https
• XWIKI-55 2005-06-17T13-28 13/Aug/12 Lack of cache control for proxies in attachments

• 4.5.4  
• 5.1-milestone-1  
• 5.0.2